Cannot Detect Source of Leak

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albatross2011 Participant Join Date: Jan 2011 Posts: 1	Cannot Detect Source of Leak 02/21/2012 7:56 AM
	Cummins K-19 marine diesel leaking water on side of engine. Does not leak when idle or moderate throttle. However, when full throttle engine begins to leak. Prior to the leak engine ran hot due to day tank water line clogged. Engine stopped running. Rocker arm inside valve cover was found to have come loose. Repaired rocker arm and water line. Engine starts with no problem, sounds good, however signs of water leaking on side of engine is evident when throttle up.
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Crabtree Guru Join Date: Jul 2007 Location: Commissariat de Police, Nouvions, occupied France, 1942. Posts: 2599 Good Answers: 77	#1 Re: Cannot detect source of leak 02/21/2012 7:58 AM
	Remarkable. __________________ Good moaning!
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kramarat Guru Join Date: Jun 2008 Location: Raleigh, NC USA Posts: 13529 Good Answers: 468	#2 Re: Cannot detect source of leak 02/21/2012 8:11 AM
	Crack? Freeze plug? Warped head? Make sure everything is dry. Add some coolant dye to the coolant. Run engine with a person observing for source of leak. If it's dark in the engine compartment, you can get dye that glows under UV light. Once the source of the leak is determined, you will know what to fix. __________________ Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. Ben Franklin
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#3 Re: Cannot detect source of leak 02/21/2012 8:15 AM
	Throw a can of stop-leak in the radiator. You don't have much to loose at this point.
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kramarat Guru Join Date: Jun 2008 Location: Raleigh, NC USA Posts: 13529 Good Answers: 468	#4 In reply to #3 Re: Cannot detect source of leak 02/21/2012 8:37 AM
	Those quick fixes for cars are usually not a good idea for boats. When they get stranded, it's not on the side of the road. __________________ Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. Ben Franklin
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KJK/USA Guru Join Date: Apr 2010 Location: Mid Western USA - The Corn Belt Posts: 1439 Good Answers: 58	#5 Re: Cannot detect source of leak 02/21/2012 8:38 AM
	You ran the engine hot - You may have cracked a head. At full throttle it begins to leak which indicates to me that there is most likely a hair-line crack somewhere. If you want to find the leak and repair it, I suggest that you clean the side of the engine where the leak is evident of all oil, grease, and dirt. Set up adequate lighting using care to prevent getting electrocuted due to the light getting wet. Or better yet, if you have a closed loop exchange system, go with the UV option that Kram suggested. Put on your hearing protection, position yourself at the proper angle to see the area of leakage and have the skipper take her out and crank her up. Look for water/coolant leakage. If all else fails and again if you have a closed loop exchange system, take Lyn's suggestion and add stop-leak for a temporary fix. __________________ The first 5 days after a weekend are always the hardest................................
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SolarEagle Guru Join Date: Mar 2007 Location: by the beach in Florida Posts: 33392 Good Answers: 1817	#6 Re: Cannot Detect Source of Leak 02/21/2012 12:38 PM
	Clean it up, paint it white, put red coolant dye in, pull engine, weld crack, sell, get new engine, go home... __________________ All living things seek to control their own destiny....this is the purpose of life
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claritysable Power-User Join Date: Aug 2007 Location: Queensland, Australia. Posts: 159 Good Answers: 4	#7 In reply to #6 Re: Cannot Detect Source of Leak 02/21/2012 10:40 PM
	Mr Eagle; Along with the GA, there needs to be a 'like' button, for answers such as yours! __________________ Fish dont know they're underwater.......think.
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Wal Guru Join Date: Jun 2011 Location: Phnom Penh Posts: 4019 Good Answers: 102	#8 Re: Cannot Detect Source of Leak 02/22/2012 1:38 AM
	Side of engine is a very broad location specification. You will be able to see exactly where it is coming from without any special coolant additives. If you can't describe the exact place where water is leaking from in words then take a photo or two or more (you can never take too many photos) and post those that show it the best. Post some photos of the boat too. Boats are cool. What is your location? __________________ Difficulty is not an obstacle it is merely an attribute.
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claritysable (1); Crabtree (1); KJK/USA (1); kramarat (2); lyn (1); SolarEagle (1); Wal (1)

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